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Santorum leads Romney in latest Ohio poll

Former Pennsylvania Sen. Rick Santorum still has a small lead over rival Mitt Romney in the latest poll of likely Republican primary voters in Ohio, though the gap between the two men has shrunk since Monday.

In addition to the Buckeye state, voters in Alaska, Georgia, Idaho, Massachusetts, North Dakota, Oklahoma, Tennessee, Vermont and Virginia head to the polls on "Super Tuesday," as the early March contest has come to be known. Ohio is considered the most important of the states as it will be crucial for the Republican candidate to win Ohio in the general election seven months from now.